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Author SHA1 Message Date
Owen Anderson
0e2c359a3e Re-enable LazyValueInfo. Monitoring for failures. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@111816 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-08-23 18:12:23 +00:00
Owen Anderson
02dd53e1c5 Now that PassInfo and Pass::ID have been separated, move the rest of the passes over to the new registration API. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@111815 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-08-23 17:52:01 +00:00
Owen Anderson
a4cba04a03 Re-apply r111568 with a fix for the clang self-host. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@111665 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-08-20 18:24:43 +00:00
Owen Anderson
45c3b65eb7 Revert r111568 to unbreak clang self-host. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@111571 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-08-19 23:25:16 +00:00
Owen Anderson
9419cab4c3 When a set of bitmask operations, typically from a bitfield initialization, only modifies the low bytes of a value, 
we can narrow the store to only over-write the affected bytes.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@111568 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-08-19 22:15:40 +00:00
Owen Anderson
684d8d5b50 Disable LVI while I evaluate a failure. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@111551 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-08-19 19:47:08 +00:00
Owen Anderson
f2d197b77a Tentatively enabled LVI by default. I'll be monitoring for any failures. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@111543 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-08-19 19:04:40 +00:00
Dan Gohman
694a15eabe Process the step before the start, because it's usually the simpler 
of the two.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@111495 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-08-19 01:02:31 +00:00
Owen Anderson
00ac77ef88 Inform LazyValueInfo whenever a block is deleted, to avoid dangling pointer issues. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@111382 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-08-18 18:39:01 +00:00
Chris Lattner
2fa7b48eb5 Fix PR7755: knowing something about an inval for a pred 
from the LHS should disable reconsidering that pred on the
RHS.  However, knowing something about the pred on the RHS
shouldn't disable subsequent additions on the RHS from
happening.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@111349 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-08-18 03:14:36 +00:00
Chris Lattner
c7e31fcf49 fit in 80 cols 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@111348 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-08-18 03:13:35 +00:00
Chris Lattner
473fc96889 remove some dead code. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@111344 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-08-18 02:41:56 +00:00
Chris Lattner
3126f1c028 remove dead prototype. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@111342 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-08-18 02:37:06 +00:00
Eric Christopher
68c23f8616 Temporarily revert r110987 as it's causing some miscompares in 
vector heavy code.  I'll re-enable when we've tracked down the problem.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@111318 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-08-17 22:55:27 +00:00
Dan Gohman
fc8042a122 When rotating loops, put the original header at the bottom of the 
loop, making the resulting loop significantly less ugly.  Also, zap
its trivial PHI nodes, since it's easy.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@111255 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-08-17 17:39:21 +00:00
Dan Gohman
1c034dcbbc Use the getUniquePredecessor() utility function, instead of doing 
what it does manually.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@111248 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-08-17 17:07:02 +00:00
Evan Cheng
e1bcb440dc Add an option to disable codegen prepare critical edge splitting. In theory, PHI elimination is already doing all (most?) of the splitting needed. But machine-licm and machine-sink seem to miss some important optimizations when splitting is disabled. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@111224 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-08-17 01:34:49 +00:00
Dan Gohman
3e22b7c916 Instead of having CollectSubexpr's categorize operands as interesting or 
uninteresting, just put all the operands on one list and make
GenerateReassociations make the decision about what's interesting.
This is simpler, and it avoids an extra ScalarEvolution::getAddExpr call.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@111133 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-08-16 15:50:00 +00:00
Dan Gohman
4065f60912 Put add operands in ScalarEvolution-canonical order, when convenient. 
This isn't necessary, because ScalarEvolution sorts them anyway,
but it's tidier this way.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@111132 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-08-16 15:39:27 +00:00
Dan Gohman
ebd9923bd8 Avoid #include <ScalarEvolution.h> in LoopSimplify.cpp, which doesn't 
actually use ScalarEvolution.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@111124 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-08-16 14:44:03 +00:00
Dan Gohman
7a4994356b Instead, teach SimplifyCFG to trim non-address-taken blocks from 
indirectbr destination lists.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@111122 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-08-16 14:41:14 +00:00
Dan Gohman
c2f40066bb LoopSimplify shouldn't split loop backedges that use indirectbr. PR7867. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@111061 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-08-14 00:43:09 +00:00
Dan Gohman
e2c6d131d1 Teach SimplifyCFG how to simplify indirectbr instructions. 
- Eliminate redundant successors.
 - Convert an indirectbr with one successor into a direct branch.

Also, generalize SimplifyCFG to be able to be run on a function entry block.
It knows quite a few simplifications which are applicable to the entry
block, and it only needs a few checks to avoid trouble with the entry block.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@111060 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-08-14 00:29:42 +00:00
Dan Gohman
e62d58884a Fix LSR's ExtractImmediate and ExtractSymbol to avoid calling 
ScalarEvolution::getAddExpr, which can be pretty expensive, when nothing
has changed, which is pretty common.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@111042 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-08-13 21:17:19 +00:00
Nate Begeman
7f1f4089a1 Reapply this transformation now that it is passing the external test which it previously failed. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@110987 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-08-13 00:17:53 +00:00
Chris Lattner
1522ce9770 fix PR7876: If ipsccp decides that a function's address is taken 
before it rewrites the code, we need to use that in the post-rewrite pass.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@110962 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-08-12 22:25:23 +00:00
Eric Christopher
7486278900 Temporarily revert 110737 and 110734, they were causing failures 
in an external testsuite.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@110905 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-08-12 07:01:22 +00:00
Nate Begeman
95743d8748 Add the minimal amount of smarts necessary to instcombine of shufflevectors to recognize 
patterns generated by clang for transpose of a matrix in generic vectors.  This is made
of two parts:

1) Propagating vector extracts of hi/lo half into their users
2) Recognizing an insertion of even elements followed by the odd elements as an unpack.

Testcase to come, but this shrinks the # of shuffle instructions generated on x86 from ~40 to the minimal 8.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@110734 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-08-10 21:38:12 +00:00
Nick Lewycky
3221834f8a Fix a use after free error caught by the valgrind builders. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@110601 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-08-09 21:03:28 +00:00
Eli Friedman
4fffb345ed PR7853: fix a silly mistake introduced in r101899, and add a test to make sure 
it doesn't regress again.



git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@110597 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-08-09 20:49:43 +00:00
Nick Lewycky
be04fdeb6c Do more to modernize MergeFunctions. Refactor in response to Chris' code review. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@110538 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-08-08 05:04:23 +00:00
Owen Anderson
5015b3417f Don't attempt the PRE inline asm calls, since we don't value number them yet. Fixes PR7835. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@110489 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-08-07 00:20:35 +00:00
Dan Gohman
60493c3f4f Eliminate PromoteMemoryToRegisterID; just use addPreserved("mem2reg") 
instead, as an example of what this looks like.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@110478 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-08-06 21:48:06 +00:00
Owen Anderson
90c579de5a Reapply r110396, with fixes to appease the Linux buildbot gods. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@110460 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-08-06 18:33:48 +00:00
Nick Lewycky
e52e9d6045 Fix uninitialized variable warning. 
Also move 'default' case next to a real case to help compiler optimize in
non-Debug builds.
No functionality change.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@110435 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-08-06 07:43:46 +00:00
Nick Lewycky
c9dcbed6a3 Work in progress, cleaning up MergeFuncs. 
Further clean up the comparison function by removing overly generalized
"domains".
Remove all understanding of ELF aliases and simplify folding code and comments.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@110434 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-08-06 07:21:30 +00:00
Owen Anderson
1f74590e9d Revert r110396 to fix buildbots. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@110410 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-08-06 00:23:35 +00:00
Owen Anderson
9ccaf53ada Don't use PassInfo* as a type identifier for passes. Instead, use the address of the static 
ID member as the sole unique type identifier.  Clean up APIs related to this change.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@110396 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-08-05 23:42:04 +00:00
Owen Anderson
f35b08db50 Give JumpThreading+LVI a long-form cl::opt so that it's easier to toggle the default. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@110384 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-08-05 22:11:31 +00:00
Owen Anderson
b57e6558c7 Experiments show that we can safely increase our unrolling threshold without unduly impacting code size, particularly 
since unrolling is not enabled at -Os.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@110233 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-08-04 18:32:46 +00:00
Dan Gohman
4eaee28e34 Fix whitespace. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@110223 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-08-04 17:43:57 +00:00
Dan Gohman
2511bd06de Fix a comment. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@110181 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-08-04 01:16:35 +00:00
Dan Gohman
79fca6fea8 Thread const correctness through a bunch of AliasAnalysis interfaces and 
eliminate several const_casts.

Make CallSite implicitly convertible to ImmutableCallSite.

Rename the getModRefBehavior for intrinsic IDs to
getIntrinsicModRefBehavior to avoid overload ambiguity with CallSite,
which happens to be implicitly convertible to bool.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@110155 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-08-03 21:48:53 +00:00
Dan Gohman
0fd353376b Make instcombine set explicit alignments on load or store 
instructions with alignment 0, so that subsequent passes don't
need to bother checking the TargetData ABI size manually.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@110128 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-08-03 18:20:32 +00:00
Peter Collingbourne
3bababf880 Add an atomic lowering pass 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@110113 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-08-03 16:19:16 +00:00
Dan Gohman
795e70e431 Use unary + instead of a separate local variable for working 
around std::min vs static const friction.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@110112 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-08-03 16:15:50 +00:00
Owen Anderson
61378363b7 Re-apply the infamous r108614, with a fix pointed out by Dirk Steinke. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@110036 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-08-02 09:32:13 +00:00
Oscar Fuentes
ee56c42168 Prefix next' iterator operation with llvm::'. 
Fixes potential ambiguity problems on VS 2010.

Patch by nobled!


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@110029 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-08-02 06:00:15 +00:00
Daniel Dunbar
44c7486c63 Fix a -Wreorder warning. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@110022 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-08-02 05:43:46 +00:00
Nick Lewycky
78d4330fd8 Work in progress. 
Start cleaning up MergeFunctions to look more like the rest of LLVM. The
primary change here is to move the methods responsible for comparison into the
new FunctionComparator object. Some comments added. There's more to do.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@110021 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-08-02 05:23:03 +00:00
Daniel Dunbar
10b173a1e7 Speculatively revert r108614, "Another attempt at getting the clang self-host to 
like my instcombine patch.", in an attempt to fix Clang i386 bootstrap.
 - Also PR7719.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@109953 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-07-31 19:51:11 +00:00
Rafael Espindola
d720670393 The BlockExtractorPass() constructor was not reading the BlockFile and that was 
exactly what bugpoint expected it to do.

There was also only one user of
BlockExtractorPass(const std::vector<BasicBlock*> &B), so just remove it and
make BlockExtractorPass read BlockFile.

This fixes bugpoint's block extraction.

Nick, please review.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@109936 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-07-31 00:32:17 +00:00
Dan Gohman
e16829b401 Move MaximumAlignment to be a member of the Value class. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@109891 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-07-30 21:07:05 +00:00
Nick Lewycky
39a383124b Add missing newline to debug statement. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@109886 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-07-30 20:27:01 +00:00
Eli Friedman
618898e933 PR7750: !CExpr->isNullValue() only properly computes whether CExpr is nonnull 
if CExpr is a ConstantInt.



git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@109773 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-07-29 18:03:33 +00:00
Gabor Greif
7d3056b160 simplify by using CallSite constructors; virtually eliminates CallSite::get from the tree 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@109687 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-07-28 22:50:26 +00:00
Dan Gohman
138aa2a82b Define a maximum supported alignment value for load, store, and 
alloca instructions (constrained by their internal encoding),
and add error checking for it. Fix an instcombine bug which
generated huge alignment values (null is infinitely aligned).
This fixes undefined behavior noticed by John Regehr.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@109643 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-07-28 20:12:04 +00:00
Dan Gohman
33591af872 When user code intentionally dereferences null, the alignment of the 
dereference is theoretically infinite. Put a cap on the computed
alignment to avoid overflow, noticed by John Regehr.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@109596 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-07-28 17:14:23 +00:00
Gabor Greif
f5e13095fa simplify 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@109589 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-07-28 15:52:43 +00:00
Gabor Greif
d09475c226 use Value* constructor of CallSite to create potentially improper site, and test that 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@109581 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-07-28 14:28:18 +00:00
Gabor Greif
a292b2f49f recommit simplification (r109502, backed out r109509); seems to innocent 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@109510 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-07-27 16:44:23 +00:00
Gabor Greif
5b0c25313e back out this too to restore the bots 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@109509 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-07-27 15:56:07 +00:00
Gabor Greif
86099345db simplify: CallSite::get --> CallSite constructor 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@109506 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-07-27 15:02:37 +00:00
Gabor Greif
50da18171e simplify 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@109502 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-07-27 13:31:22 +00:00
Owen Anderson
cfa7fb6df5 Add an initial implementation of LazyValueInfo updating for JumpThreading. Disabled for now. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@109424 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-07-26 18:48:03 +00:00
Dan Gohman
052f000158 Remove LCSSA's bogus dependence on LoopSimplify and LoopSimplify's bogus 
dependence on DominanceFrontier. Instead, add an explicit DominanceFrontier
pass in StandardPasses.h to ensure that it gets scheduled at the right
time.

Declare that loop unrolling preserves ScalarEvolution, and shuffle some
getAnalysisUsages.

This eliminates one LoopSimplify and one LCCSA run in the standard
compile opts sequence.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@109413 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-07-26 18:11:16 +00:00
Dan Gohman
572365ec88 Preserve ScalarEvolution in the loop unroller. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@109412 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-07-26 18:02:06 +00:00
Dan Gohman
b7aa26bbdb Use DominatorTree::properlyDominates instead of dominates with an 
explicit inequality check.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@109401 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-07-26 17:37:36 +00:00
Dan Gohman
cb6816dc81 A block dominates itself, by definition. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@109400 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-07-26 17:35:32 +00:00
Nick Lewycky
de4e94a18c Revert this because we can't clone cyclic MDNodes which are creating during a 
build of llvm-gcc.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@109355 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-07-24 20:54:02 +00:00
Nick Lewycky
fee12b2985 Whether function-local or not, a MDNode may reference a Function in which case 
it needs to be mapped to refer to the function in the new module, not the old
one. Fixes PR7700.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@109353 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-07-24 19:43:25 +00:00
Devang Patel
169c932759 Speculatively revert 109117 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@109132 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-07-22 18:44:00 +00:00
Gabor Greif
481c4c0734 keep in 80 cols 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@109122 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-07-22 17:18:03 +00:00
Devang Patel
bd68d42843 Map MDNode correctly. 
A non function local MDNode can have an operand which is cloned by MapValue(). 


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@109117 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-07-22 16:35:00 +00:00
Gabor Greif
96f1d8ebdd mass elimination of reliance on automatic iterator dereferencing 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@109103 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-07-22 13:36:47 +00:00
Gabor Greif
945f1ab0a5 simplify 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@109101 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-07-22 13:07:39 +00:00
Gabor Greif
efdf039aec do not access arguments via low-level interface, do not multiply dereference use_iterators 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@109100 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-07-22 13:04:32 +00:00
Gabor Greif
85e01df73d pass dereferenced iterator to dyn_cast 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@109099 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-07-22 11:48:35 +00:00
Gabor Greif
20361b9d4d pass dereferenced iterator to dyn_cast 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@109098 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-07-22 11:43:44 +00:00
Gabor Greif
a399781289 undo 80 column trespassing I caused 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@109092 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-07-22 10:37:47 +00:00
Dan Gohman
17aa92c92a Make NamedMDNode not be a subclass of Value, and simplify the interface 
for creating and populating NamedMDNodes.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@109061 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-07-21 23:38:33 +00:00
Owen Anderson
d13db2c59c Fix batch of converting RegisterPass<> to INTIALIZE_PASS(). 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@109045 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-07-21 22:09:45 +00:00
Dan Gohman
549979f550 Make this code a little more readable. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@108968 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-07-20 23:49:44 +00:00
Dan Gohman
333a94765a Use DebugLocs instead of MDNodes. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@108967 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-07-20 23:49:05 +00:00
Dan Gohman
e336cbc450 Fix a typo. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@108962 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-07-20 23:10:36 +00:00
Dan Gohman
7bc230ec6a Don't look up the "dbg" metadata kind by name. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@108961 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-07-20 23:09:34 +00:00
Dan Gohman
bda0252639 Use getDebugLoc and setDebugLoc instead of getDbgMetadata and setDbgMetadata, 
avoiding MDNode overhead.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@108909 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-07-20 20:09:07 +00:00
Dan Gohman
43ef3fbae1 Remember that the induction variable is always a PHINode and 
use getIncomingValueForBlock instead of
LoopInfo::getCanonicalInductionVariableIncrement.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@108865 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-07-20 17:18:52 +00:00
Owen Anderson
5f23a938b0 Tweak per Chris' comments. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@108736 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-07-19 19:23:32 +00:00
Owen Anderson
d90290127b Reimplement r108639 in InstCombine rather than DAGCombine. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@108687 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-07-19 08:09:34 +00:00
Owen Anderson
7e3012c345 Another attempt at getting the clang self-host to like my instcombine patch. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@108614 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-07-17 06:56:35 +00:00
Chris Lattner
49669e6d3a eliminate unlockedRefineAbstractTypeTo, types are all per-llvmcontext, 
so there is no locking involved in type refinement.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@108553 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-07-16 20:50:13 +00:00
Dan Gohman
1e381fcd55 Reorder the contents of various getAnalysisUsage functions, eliminating 
a redundant loopsimplify run from the default -O2 sequence.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@108539 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-07-16 17:58:45 +00:00
Owen Anderson
835d425a16 Remove the rest of my instcombine changes. Back to the drawing board on this one. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@108530 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-07-16 16:39:00 +00:00
Gabor Greif
a6aac4c5bc eliminate CallInst::ArgOffset 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@108522 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-07-16 09:38:02 +00:00
Nick Lewycky
394ce41b7f Arrays and vectors with different numbers of elements are not equivalent. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@108517 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-07-16 06:31:12 +00:00
Eric Christopher
de309a8b52 Also revert 108422, it's causing some test failures. 
Working on testcases for Owen.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@108494 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-07-16 01:36:12 +00:00
Dan Gohman
a9db129730 Don't merge uses when they are targetting fixup sites with 
different widths. In a use with a narrower fixup, formulae
may be wider than the fixup, in which case the high bits
aren't necessarily meaningful, so it isn't safe to reuse
them for uses with wider fixups.

This fixes PR7618, though the testcase is too large for a
reasonable regression test, since it heavily dependes on
hitting LSR's heuristics in a certain way.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@108455 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-07-15 20:24:58 +00:00
Dan Gohman
ef4308d6ba Use dbgs() instead of errs() in a DEBUG. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@108453 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-07-15 20:12:42 +00:00
Owen Anderson
11acba0470 Speculatively revert r108429 to fix the clang self-host. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@108436 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-07-15 18:18:57 +00:00
Owen Anderson
40bf5e7a68 Per Chris' suggestion, get rid of the select canonicalization and just add 
the corresponding or-icmp-and pattern.  This has the added benefit of doing
the matching earlier, and thus being less susceptible to being confused by
earlier transforms.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@108429 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-07-15 17:24:23 +00:00
Owen Anderson
2722dfa75d Remove unneeded check, and correct style. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@108427 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-07-15 16:38:22 +00:00
Dan Gohman
c88c1a4581 Watch out for a constant offset cancelling out a base register, forming 
a zero. This situation arrises in Fortran code with induction variables
that start at 1 instead of 0. This fixes PR7651.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@108424 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-07-15 15:14:45 +00:00
Owen Anderson
96fe621e07 Reapply r108378, with bugfixes, testcase, and improved comment formatting. 
This now passes LIT, nighty test, and llvm-gcc bootstrap on my machine.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@108422 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-07-15 15:00:23 +00:00
Nick Lewycky
706f50820c This is a full sentence. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@108418 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-07-15 06:51:22 +00:00
Nick Lewycky
664040a03c Disable aliases on all platforms. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@108417 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-07-15 06:48:56 +00:00
Chris Lattner
35a939b97d make various clients of ReplaceAndSimplifyAllUses tolerate 
it *changing* the things it replaces, not just causing them
to drop to null.  There is no functionality change yet, but 
this is required for a subsequent patch.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@108414 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-07-15 06:06:04 +00:00
Eli Friedman
5e84e8e52a Speculatively revert r108378; may be causing bootstrap failures. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@108389 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-07-15 00:33:00 +00:00
Owen Anderson
bd129a7460 Add instcombine transforms to optimize tests of multiple bits of the same value into a single larger comparison. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@108378 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-07-14 23:33:51 +00:00
Owen Anderson
e84178a0bd Extend SimplifyCFG's common-destination folding heuristic to allow a single 
"bonus" instruction to be speculatively executed.  Add a heuristic to
ensure we're not tripping up out-of-order execution by checking that this bonus
instruction only uses values that were already guaranteed to be available.

This allows us to eliminate the short circuit in (x&1)&&(x&2).


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@108351 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-07-14 19:52:16 +00:00
Chris Lattner
07c9b64719 revert r108320, I see the failures now... 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@108322 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-07-14 06:16:35 +00:00
Chris Lattner
7e185af930 reapply benjamin's instcombine patch, I don't see anything wrong with it and can't repro any problems with a manual self-host. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@108320 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-07-14 05:59:13 +00:00
Eric Christopher
f0193ed8de Grammar. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@108252 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-07-13 18:27:13 +00:00
Duncan Sands
d0d3ccc827 Handle the case of a tail recursion in which the tail call is followed 
by a return that returns a constant, while elsewhere in the function
another return instruction returns a different constant.  This is a
special case of accumulator recursion, so just generalize the existing
logic a bit.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@108241 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-07-13 15:41:41 +00:00
Benjamin Kramer
c9fe6374b7 Nope, still breaks the release selfhost bots :( 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@108153 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-07-12 16:38:48 +00:00
Benjamin Kramer
8fd437c43f Reapply the "or" half of r108136, which seems to be less problematic. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@108152 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-07-12 16:15:48 +00:00
Gabor Greif
a9b8338bfa cache result of operator* 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@108150 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-07-12 15:48:26 +00:00
Benjamin Kramer
e2d07b5208 Revert r108141 again, sigh. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@108148 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-07-12 14:42:04 +00:00
Gabor Greif
40119ceeec cache result of operator* 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@108147 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-07-12 14:15:58 +00:00
Gabor Greif
a53029b1fc cache result of operator* 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@108146 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-07-12 14:15:10 +00:00
Gabor Greif
65b9212d34 cache result of operator* 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@108145 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-07-12 14:14:03 +00:00
Gabor Greif
aaaaa02a93 cache result of operator* 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@108144 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-07-12 14:13:15 +00:00
Gabor Greif
b7df500063 cache results of operator* 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@108143 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-07-12 14:12:11 +00:00
Gabor Greif
ee1f44fba3 cache results of operator* 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@108142 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-07-12 14:10:24 +00:00
Benjamin Kramer
98a8206e58 Reapply 108136 with an ugly pasto fixed. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@108141 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-07-12 13:44:00 +00:00
Benjamin Kramer
ad854f0764 Move optimization to avoid redundant matching. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@108140 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-07-12 13:34:22 +00:00
Benjamin Kramer
0cc4ed1ca5 Revert r108136 until I figure out why it broke selfhost. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@108139 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-07-12 12:35:49 +00:00
Gabor Greif
110b75aa75 cache dereferenced iterators 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@108138 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-07-12 12:03:02 +00:00
Gabor Greif
639e9e47a2 recommit r108131 (hich has been backed out in r108135) with a fix 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@108137 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-07-12 12:02:10 +00:00
Benjamin Kramer
4fc719e607 instcombine: fold (x & y) | (~x & z) and (x & y) ^ (~x & z) into ((y ^ z) & x) ^ z which is one instruction shorter. (PR6773) 
before:
  %and = and i32 %y, %x
  %neg = xor i32 %x, -1
  %and4 = and i32 %z, %neg
  %xor = xor i32 %and4, %and

after:
  %xor1 = xor i32 %z, %y
  %and2 = and i32 %xor1, %x
  %xor = xor i32 %and2, %z


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@108136 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-07-12 11:54:45 +00:00
Gabor Greif
e99e077522 back out r108131 (of TailDuplication.cpp) for now, it causes a buildbot failure 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@108135 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-07-12 11:32:39 +00:00
Gabor Greif
fc41f90817 cache dereferenced iterators 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@108134 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-07-12 11:19:24 +00:00
Gabor Greif
625398343e cache dereferenced iterators 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@108133 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-07-12 10:59:23 +00:00
Gabor Greif
f1b2874c68 cache dereferenced iterators 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@108132 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-07-12 10:49:54 +00:00
Gabor Greif
a8b9df7bd9 cache dereferenced iterators 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@108131 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-07-12 10:36:48 +00:00
Duncan Sands
3472766f9e Convert some tab stops into spaces. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@108130 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-07-12 08:16:59 +00:00
Chris Lattner
5a30a8574c make the prototypes for CreateMalloc and CreateFree more consistent. Patch 
by Hans Vandierendonck from PR7605


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@108116 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-07-12 00:57:28 +00:00
Chris Lattner
0a96144aac if jump threading is able to infer interesting values on both 
the LHS and RHS of an and/or instruction, don't multiply add
known predecessor values.  This fixes the crash on testcase
from PR7498


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@108114 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-07-12 00:47:34 +00:00
Duncan Sands
24080a9878 The accumulator tail recursion transform claims to work for any associative 
operation, but the way it's implemented requires the operation to also be
commutative.  So add a check for commutativity (and tweak the corresponding
comments).  This makes no difference in practice since every associative
LLVM instruction is also commutative!  Here's an example to show the need
for commutativity: the accum_recursion.ll testcase calculates the factorial
function.  Before the transformation the result of a call is
  ((((1*1)*2)*3)...)*x
while afterwards it is
  (((1*x)*(x-1))...*2)*1
which clearly requires both associativity and commutativity of * to be equal
to the original.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@108056 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-07-10 20:31:42 +00:00
Gabor Greif
e664267ae7 cache result of operator* 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@107990 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-07-09 16:51:20 +00:00
Gabor Greif
9085fcab82 cache result of operator* 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@107984 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-07-09 16:31:08 +00:00
Gabor Greif
bf2eefdb0d cache result of operator* 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@107983 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-07-09 16:26:41 +00:00
Gabor Greif
e80ba4f884 cache result of operator* 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@107981 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-07-09 16:17:52 +00:00
Gabor Greif
7656018c22 cache result of operator* 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@107976 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-07-09 15:40:10 +00:00
Gabor Greif
7556cf541b cache result of operator* 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@107975 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-07-09 15:25:42 +00:00
Gabor Greif
5896935423 cache result of operator* 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@107974 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-07-09 15:25:09 +00:00
Gabor Greif
fc36c0f21f cache result of operator* 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@107972 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-07-09 15:01:36 +00:00
Gabor Greif
1d3ae029c4 cache result of operator* (found by inspection) 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@107971 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-07-09 14:48:08 +00:00
Gabor Greif
0814985887 cache result of operator* 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@107969 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-07-09 14:36:49 +00:00
Gabor Greif
a29742df5f cache result of operator* 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@107968 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-07-09 14:29:14 +00:00
Gabor Greif
5417a03b55 cache result of operator* 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@107966 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-07-09 14:18:23 +00:00
Gabor Greif
9672414017 cache operator*'s result (in multiple functions) 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@107965 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-07-09 14:02:13 +00:00
Gabor Greif
b654435712 do not repeatedly dereference use_iterator 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@107962 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-07-09 12:23:50 +00:00
Benjamin Kramer
1db071f0da Teach instcombine to transform 
(X >s -1) ? C1 : C2 and (X <s  0) ? C2 : C1
into ((X >>s 31) & (C2 - C1)) + C1, avoiding the conditional.

This optimization could be extended to take non-const C1 and C2 but we better
stay conservative to avoid code size bloat for now.

for
int sel(int n) {
     return n >= 0 ? 60 : 100;
}

we now generate
  sarl  $31, %edi
  andl  $40, %edi
  leal  60(%rdi), %eax

instead of
  testl %edi, %edi
  movl  $60, %ecx
  movl  $100, %eax
  cmovnsl %ecx, %eax


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@107866 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-07-08 11:39:10 +00:00
Chris Lattner
0238f8c430 Fix the second half of PR7437: scalarrepl wasn't preserving 
address spaces when SRoA'ing memcpy's.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@107846 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-07-08 00:27:05 +00:00
Duncan Sands
8246adc1f0 Rename "Release" builds as "Release+Asserts"; rename "Release-Asserts" 
builds to "Release".  The default build is unchanged (optimization on,
assertions on), however it is now called Release+Asserts.  The intent
is that future LLVM releases released via llvm.org will be Release builds
in the new sense, i.e. will have assertions disabled (currently they have
assertions enabled, for a more than 20% slowdown).  This will bring them
in line with MacOS releases, which ship with assertions disabled.  It also
means that "Release" now means the same things in make and cmake builds:
cmake already disables assertions for "Release" builds AFAICS.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@107758 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-07-07 07:48:00 +00:00
Nick Lewycky
10d2f4d01b Detabify this file. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@107637 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-07-06 03:53:43 +00:00
Devang Patel
1192d4d0a5 MDString is already checked earlier. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@107516 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-07-02 21:13:23 +00:00
Dan Gohman
8c1ffae068 Don't claim to preserve AliasAnalysis. First, this is doesn't actually 
have any effect, and second, deleting stores can potentially invalidate
an AliasAnalysis, and there's currently no notification for this.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@107496 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-07-02 18:43:05 +00:00
Bill Wendling
5e721d7682 Implement the "linker_private_weak" linkage type. This will be used for 
Objective-C metadata types which should be marked as "weak", but which the
linker will remove upon final linkage. However, this linkage isn't specific to
Objective-C.

For example, the "objc_msgSend_fixup_alloc" symbol is defined like this:

      .globl l_objc_msgSend_fixup_alloc
      .weak_definition l_objc_msgSend_fixup_alloc
      .section __DATA, __objc_msgrefs, coalesced
      .align 3
l_objc_msgSend_fixup_alloc:
       .quad   _objc_msgSend_fixup
       .quad   L_OBJC_METH_VAR_NAME_1

This is different from the "linker_private" linkage type, because it can't have
the metadata defined with ".weak_definition".

Currently only supported on Darwin platforms.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@107433 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-07-01 21:55:59 +00:00
Devang Patel
26d14294de Debugging infomration is encoded in llvm IR using metadata. This is designed 
such a way that debug info for symbols preserved even if symbols are
optimized away by the optimizer. 

Add new special pass to remove debug info for such symbols.



git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@107416 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-07-01 19:49:20 +00:00
Devang Patel
e62b203570 If a named mdnode is removed then mark module as changed. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@107412 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-07-01 18:27:46 +00:00
Jim Grosbach
7fa1bbad29 lowerinvoke needs to handle aggregate function args like sjlj eh does. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@107335 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-06-30 22:22:59 +00:00
Devang Patel
444a08cd6f Remove all debug info related named mdnodes. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@107323 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-06-30 21:29:00 +00:00
Gabor Greif
8e1ebff9f1 use ArgOperand API 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@107278 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-06-30 12:42:43 +00:00
Gabor Greif
e9af352d74 use ArgOperand API 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@107277 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-06-30 12:40:35 +00:00
Gabor Greif
2458513430 use getArgOperand (corrected by CallInst::ArgOffset) instead of getOperand 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@107275 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-06-30 12:38:26 +00:00
Gabor Greif
6e1f330c4c use getArgOperand (corrected by CallInst::ArgOffset) instead of getOperand 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@107273 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-06-30 09:19:23 +00:00
Gabor Greif
237e1da16a use getNumArgOperands instead of getNumOperands 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@107272 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-06-30 09:17:53 +00:00
Gabor Greif
6f14c8c7c1 use getArgOperand instead of getOperand 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@107271 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-06-30 09:16:16 +00:00
Gabor Greif
ad72e73136 use getArgOperand instead of getOperand 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@107270 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-06-30 09:15:28 +00:00
Gabor Greif
351cbac4d3 use getArgOperand instead of getOperand 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@107269 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-06-30 09:14:26 +00:00
Bill Wendling
07d3177117 Revert r107205 and r107207. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@107215 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-06-29 22:34:52 +00:00
Bill Wendling
207855cff9 Introducing the "linker_weak" linkage type. This will be used for Objective-C 
metadata types which should be marked as "weak", but which the linker will
remove upon final linkage. For example, the "objc_msgSend_fixup_alloc" symbol is
defined like this:

       .globl l_objc_msgSend_fixup_alloc
       .weak_definition l_objc_msgSend_fixup_alloc
       .section __DATA, __objc_msgrefs, coalesced
       .align 3
l_objc_msgSend_fixup_alloc:
        .quad   _objc_msgSend_fixup
        .quad   L_OBJC_METH_VAR_NAME_1

This is different from the "linker_private" linkage type, because it can't have
the metadata defined with ".weak_definition".


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@107205 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-06-29 21:24:00 +00:00
Duncan Sands
a7065b1fcc Return Changed. This required setting Changed if dbg metadata 
is stripped off.  Currently set unconditionally, since the API
does not provide a way of working out if anything was actually
stripped off.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@107142 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-06-29 14:52:10 +00:00
Gabor Greif
a90c5c7605 use ArgOperand API 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@107017 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-06-28 16:50:57 +00:00
Gabor Greif
30d2577f64 use ArgOperand API 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@107016 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-06-28 16:45:00 +00:00
Gabor Greif
d6bf5cf641 employ CallInst::ArgOffset (for now) 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@107015 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-06-28 16:43:57 +00:00
Gabor Greif
18c383f87f use setArgOperand 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@107004 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-06-28 12:31:35 +00:00
Gabor Greif
245e9c4834 use CallInst::ArgOffset 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@107003 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-06-28 12:30:07 +00:00
Gabor Greif
f148cb6044 use ArgOperand API and CallInst::ArgOffset 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@107002 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-06-28 12:29:20 +00:00
Gabor Greif
19101c7585 use cached value 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@107000 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-06-28 11:20:42 +00:00
Chris Lattner
1495247f51 minor cleanup to SROA: when lowering type unsafe accesses to 
large integers, the first inserted value would always create
an 'or X, 0'.  Even though this is trivially zapped by
instcombine, don't bother creating this pointless instruction.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@106979 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-06-27 07:58:26 +00:00
Duncan Sands
d50e9e2566 Fix PR7328: when turning a tail recursion into a loop, need to preserve 
the returned value after the tail call if it differs from other return
values.  The optimal thing to do would be to introduce a phi node for
the return value, but for the moment just fix the miscompile.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@106947 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-06-26 12:53:31 +00:00
Dan Gohman
3e3f15bb09 In GenerateReassociations, don't bother thinking about individual 
SCEVUnknown values which are loop-variant, as LSR can't do anything
interesting with these values in any case. This fixes very slow compile
times on loops which have large numbers of such values.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@106897 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-06-25 22:32:18 +00:00
Dale Johannesen
1784d160e4 The hasMemory argument is irrelevant to how the argument 
for an "i" constraint should get lowered; PR 6309.  While
this argument was passed around a lot, this is the only
place it was used, so it goes away from a lot of other
places.



git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@106893 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-06-25 21:55:36 +00:00
Gabor Greif
f1ba6513bf use ArgOperand API (one more hunk I could split) 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@106825 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-06-25 07:58:41 +00:00
Gabor Greif
9c68a7bb45 use ArgOperand API (some hunks I could split) 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@106824 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-06-25 07:57:14 +00:00
Gabor Greif
7f1d7f5779 use ArgOperand API; tighten type of handleFreeWithNonTrivialDependency to be able to use isFreeCall whithout a cast or new overload 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@106823 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-06-25 07:40:32 +00:00
Dan Gohman
fc33a3099e Add an exports file for the Hello example plugin. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@106768 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-06-24 17:36:51 +00:00
Dan Gohman
2ea09e0546 A few minor micro-optimizations. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@106764 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-06-24 16:57:52 +00:00
Dan Gohman
d42819a07b Teach getExactSDiv to evaluate x/1 to x up front, as it's a common 
enough special case, and it theoretically allows more folding because
it works even when x is unanalyzable.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@106763 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-06-24 16:51:25 +00:00
Dan Gohman
473e63512a Fix copy+pasto issues in isMulSExtable. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@106759 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-06-24 16:45:11 +00:00
Gabor Greif
caf70b31b0 use ArgOperand API 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@106752 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-06-24 16:11:44 +00:00
Gabor Greif
2f1ab74e76 use (even more, still) ArgOperand API 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@106750 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-06-24 15:51:11 +00:00
Gabor Greif
9e4f243de7 use ArgOperand API and CallSite for arg range; add necessary casts and perform some cosmetics 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@106747 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-06-24 14:42:01 +00:00
Gabor Greif
fef8c4eb54 use ArgOperand API and CallSite for arg range 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@106745 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-06-24 14:13:36 +00:00
Gabor Greif
bcda85c743 use (even more) ArgOperand API 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@106744 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-06-24 13:54:33 +00:00
Gabor Greif
c310fcc909 use ArgOperand API 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@106743 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-06-24 13:42:49 +00:00
Gabor Greif
cea7ac7c01 use ArgOperand API 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@106740 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-06-24 12:58:35 +00:00
Gabor Greif
3e84e2e90f use ArgOperand API 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@106737 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-06-24 12:35:13 +00:00
Gabor Greif
916973706d use ArgOperand API, also tighten the type of visitFree to make this work out smoothly 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@106736 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-06-24 12:21:15 +00:00
Gabor Greif
3ccbb22eaf use ArgOperand API; introduce downcasted pointers into scope to facilitate this 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@106734 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-06-24 12:03:56 +00:00
Gabor Greif
aee5dc1939 use ArgOperand API 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@106731 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-06-24 10:42:46 +00:00
Gabor Greif
d883a9d1ed use ArgOperand API 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@106730 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-06-24 10:17:17 +00:00
Gabor Greif
0a14be0693 use callsite to obtain all arguments 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@106729 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-06-24 10:04:07 +00:00
Gabor Greif
aeff385e3e use callsite to obtain all arguments 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@106728 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-06-24 09:56:43 +00:00
Gabor Greif
407014f9a5 use getNumArgOperands 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@106709 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-06-24 00:48:48 +00:00
Gabor Greif
de9f5452d3 use ArgOperand API 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@106707 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-06-24 00:44:01 +00:00
Devang Patel
e9916a302f Use ValueMap instead of DenseMap. 
The ValueMapper used by various cloning utility maps MDNodes also.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@106706 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-06-24 00:33:28 +00:00
Devang Patel
774cca70b1 Use available typedef for " DenseMap<const Value*, Value*>". 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@106699 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-06-24 00:00:42 +00:00
Devang Patel
29d3dd8a64 Cosmetic change. 
Do not use "ValueMap" as a name for a local variable or an argument.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@106698 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-06-23 23:55:51 +00:00
Devang Patel
170f06ebe2 Revert 106592 for now. It causes clang-selfhost build failure. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@106598 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-06-22 23:29:55 +00:00
Dan Gohman
caf71ab473 Fix OptimizeMax to handle an odd case where one of the max operands 
is another max which folds. This fixes PR7454.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@106594 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-06-22 23:07:13 +00:00
Devang Patel
186b3d2606 If a metadata operand is seeded in value map and the metadata should also be seeded in value map. This is not limited to function local metadata. 
Failure to seed metdata in such cases causes troubles when in a cloned module, metadata from a new module refers to values in old module. Usually this results in mysterious bugpoint crashes. For example,

 Checking to see if we can delete global inits: Unknown constant!
 UNREACHABLE executed at /d/g/llvm/lib/Bitcode/Writer/BitcodeWriter.cpp:904!



git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@106592 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-06-22 22:53:21 +00:00
Devang Patel
3bf329f495 While cloning a module, clone metadata attached with instructions. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@106591 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-06-22 22:50:42 +00:00
Devang Patel
d8800e7972 Clone named metadata while cloning a module. 
Reapply Bob's patch.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@106560 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-06-22 18:52:38 +00:00
Dan Gohman
fe60104ac9 Use pre-increment instead of post-increment when the result is not used. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@106542 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-06-22 15:08:57 +00:00
Devang Patel
e4acff8720 Revert 106528. It is causing self host failures. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@106529 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-06-22 06:14:09 +00:00
Devang Patel
52e0612f7d Do not rely on DenseMap slot which can be easily invalidated when DenseMap grows. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@106528 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-06-22 05:16:56 +00:00
Bob Wilson
ec68864877 Revert my change to clone named metadata. Buildbots are complaining. 
--- Reverse-merging r106508 into '.':
U    lib/Transforms/Utils/CloneModule.cpp


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@106521 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-06-22 02:08:51 +00:00
Bob Wilson
e42f493f4c Include named metadata when cloning a module. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@106508 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-06-22 00:11:03 +00:00
Dan Gohman
403a8cdda5 Use A.append(...) instead of A.insert(A.end(), ...) when A is a 
SmallVector, and other SmallVector simplifications.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@106452 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-06-21 19:47:52 +00:00
Dan Gohman
74e5ef096e Add a TODO comment. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@106397 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-06-19 21:30:18 +00:00
Dan Gohman
1e3121c80a Include the use kind along with the expression in the key of the 
use sharing map. The reconcileNewOffset logic already forces a
separate use if the kinds differ, so incorporating the kind in the
key means we can track more sharing opportunities.

More sharing means fewer total uses to track, which means smaller
problem sizes, which means the conservative throttles don't kick
in as often.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@106396 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-06-19 21:29:59 +00:00
Dan Gohman
b6211710ac Don't include things in anonymous namespaces that don't need it. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@106395 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-06-19 21:21:39 +00:00
Dan Gohman
a52838285b Disable indvars on loops when LoopSimplify form is not available. 
This fixes PR7333.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@106267 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-06-18 01:35:11 +00:00
Jim Grosbach
d0e8469ba6 remove trailing whitespace 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@106164 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-06-16 22:41:09 +00:00
Rafael Espindola
e96af56a5b Make sure that simplify libcalls does not replace a call with one calling 
convention with a new call with a different calling convention.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@106134 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-06-16 19:34:01 +00:00
Benjamin Kramer
ea9ca0236d simplify-libcalls: fold strncmp(x, y, 1) -> memcmp(x, y, 1) 
The memcmp will be optimized further and even the pathological case
'strstr(x, "x") == x' generates optimal code now.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@106097 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-06-16 10:30:29 +00:00
Benjamin Kramer
386e918438 simplify-libcalls: fold strstr(a, b) == a -> strncmp(a, b, strlen(b)) == 0 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@106047 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-06-15 21:34:25 +00:00
Chris Lattner
e58867e55e jump threading can't split a critical edge from an indirectbr. This 
fixes PR7356.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@105950 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-06-14 19:45:43 +00:00
Benjamin Kramer
c05cb8d561 SimplifyCFG: don't turn volatile stores to null/undef into unreachable. Fixes PR7369. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@105914 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-06-13 14:35:54 +00:00
Kenneth Uildriks
42c7d23c6d Pulled CodeMetrics out of InlineCost.h and made it a bit more general, so it can be reused from PartialSpecializationCost 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@105725 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-06-09 15:11:37 +00:00
Dan Gohman
b9539745c5 Make bugpoint dead-argument-hacking actually work, and actually test it. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@105551 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-06-07 20:20:33 +00:00
Kenneth Uildriks
3a4340d4cb Partial specialization was not checking the callsite to make sure it was using the same constants as the specialization, leading to calls to the wrong specialization. Patch by Takumi Nakamura\! 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@105528 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-06-05 14:50:21 +00:00
Dan Gohman
a15ec5dfcc Don't track users of undef values; they aren't interesting for 
register pressure.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@105501 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-06-04 23:16:05 +00:00
Devang Patel
93031ac032 Copy location info for current function argument from dbg.declare if respective store instruction does not have any location info. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@105490 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-06-04 22:27:30 +00:00
Jim Grosbach
23d3d4595c Remove unused code 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@105293 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-06-01 21:56:30 +00:00
Jim Grosbach
69081e9291 fix think-o 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@105291 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-06-01 21:35:50 +00:00
Jim Grosbach
aeafb374e2 Simplify things a bit more. Fix prototype to use SmallVectorImpl and 
change a few SmallVectors to vanilla C arrays.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@105289 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-06-01 21:06:46 +00:00
Jim Grosbach
0fd8b6283f mirror of r105280 changes for LowerInvoke, which uses the same basic logic here 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@105281 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-06-01 18:04:56 +00:00
Jim Grosbach
601f9d6c03 Use SmallVector instead of std::vector. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@105279 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-06-01 17:56:41 +00:00
Duncan Sands
2914ba6ec7 Fix PR7272: when inlining through a callsite with byval arguments, 
the newly created allocas may be used by inlined calls, so these
need to have their tail call flags cleared.  Fixes PR7272.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@105255 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-05-31 21:00:26 +00:00
Benjamin Kramer
c29df3cac7 Avoid swap when a copy suffices. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@105220 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-05-31 12:50:41 +00:00
Nick Lewycky
a9d6680cb1 The memcpy intrinsic only takes i8* for %src and %dst, so cast them to that 
first. Fixes PR7265.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@105206 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-05-31 06:16:35 +00:00
Dan Gohman
dd9344f3fa Move FindAvailableLoadedValue isSafeToLoadUnconditionally out of 
lib/Transforms/Utils and into lib/Analysis so that Analysis passes
can use them.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@104949 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-05-28 16:19:17 +00:00
Dan Gohman
05d6253727 Teach instcombine to promote alloca array sizes. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@104945 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-05-28 15:09:00 +00:00
Dan Gohman
28d2e0a39f Fix instcombine's handling of alloca to accept non-i32 types. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@104935 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-05-28 04:33:04 +00:00
Devang Patel
4251d85ae7 Fix typo. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@104914 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-05-28 01:29:50 +00:00